Improvement in lamp-collars



UNITED STATES PATENT OFFICE.

FREDERICK J. SEYMOUR, 0F WOLCOTTVILLE, CONNECTICUT.

IMPROVEMENT IN LAMP-COLLARS.

Specification forming part of Letters Patent No. l6l,065,:dated March23, 1875; application filed October 20, 1874.

To all whom it may concern:

Be it known that I, FREDERICK J. SEY- MOUR, of Wolcottville, in thecounty of Litchfield and State of Connecticut, have invented anImprovement in LampCollars, of which the following is a specification:

Lamp-collars have been made with an inclined upper surface between theouter portion of the collar and the screw in the inside, as seen inpatent No.139,964. In this case the lamp-burner screwed upon such collar1 comes into contact with the inclined surface,

and any oil that may exist upon the burner, by capillary action orotherwise, instead of being directed by such incline back into theburner, is retained, and spreads over the lamp.

In Letters Patent No. 68,136 there is an annular groove around the upperpart of the reservoir, with holes to return the oil that may flow uponthe outside of the burner; but in this case such groove is in the lampitself, and is expensive to manufacture, and not available with metallamps.

My invention is made for combining in a sheet-metal collar the usefulfeatures of the before-named devices, and for avoiding the diffioultiesexperienced heretofore in said collar and reservoir.

I make the cylindrical screw as an upward extension from the bottom ofan annular groove, in which groove are holes for allowing the overflowoil to return to the reservoir, and from the outer edge of the annulargroove the metal extends down to form the collar around the neck of thelamp.

In the drawing, Figure 1 is a plan, and Fig. 2 a vertical section, ofthe said collar.

The outer portion a of the collar, the-inward incline b, and the screw0, are all made of one piece of sheet metal. The screw-thread is uponthe inside of the part c, and the annular groove or recess between b and0 forms a receptacle for oil that may flow over the outside of theburner, and at the bottom of this groove is a hole or holes to allow theoil to return to the reservoir or fountain.

The. upper end of the screw-cylinder c, being as high as the upper edgeof the portion a b, comes into contact with the lamp-burner, and suchburner does not touch any other portion of the collar, and 'hence thereis no risk of oil reaching the outside of the lamp.

There may be an ornamental plate or disk extending from the bottom edgeof the collar, as shown by dotted lines in Fig. 2.

I do not claim a lamp-collar in which the sheet-metal thereof turnsdownward from the groove, as this has been used; but it requires a sharpbend between the groove and the screw-cylinder at the upper end. Byturning the cylinder upward instead of downward, this sharp bend isavoided, and the lampburner screws against the upper edge of thesheetmetal of the cylinder, as aforesaid.

I claim as my invention- The lamp-collar made of one piece of sheetmetal, with an annular groove and escapehole, and with the cylinder 0,extending upward at the inner portion of the annular groove, and havinga screw-thread in the inner surface of'the cylinder, as set forth.

Signed by me this 15th day of October, A. D. 1874.

r F. J. SEYMOUR.

Witnesses GEO. T. PINCKNEY, CHAS. H. SMITH.

